Java的int和String类型间互相转换，小功能但是经常用到，下面是几种实现的方法。
●字符串类型String转换成整数int1). int i = Integer.parseInt([String]); 或i = Integer.parseInt([String],[int radix]);2). int i = Integer.valueOf(my_str).intValue();注: 字符串转成 Double, Float, Long 的方法大同小异.
●如何将整数 int 转换成字符串 String下面三种方法都可以:1.) String s = String.valueOf(i);2.) String s = Integer.toString(i);3.) String s = “” + i;注: Double, Float, Long 转成字符串的方法大同小异.
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